BIOL 111 Lecture Notes - Neanderthal Genome Project, Homo Sapiens, Lipid Bilayer

• School: McGill University
• Department: Biology (Sci)
• Course: BIOL 111
• Professor: Irene Gregory- Eaves

Document Summary

Summary of lecture: origin and evolution of life, history of life and modern life. Life arose only once and from that point there is diversification and evolution of life. Evolution: genetic and resulting phenotypic change (observable property) in populations of organisms from one generation to the next. Evolution doesn"t occur within an individual or even in a generation, it occurs across generations. Fossil record: gives us information about when organisms first evolved (when they were first seen) and the environment in which they lived. There are living fossils : the oldest species, representatives of these species were found in old fossils but still found today. Morphological comparisons: why evolution is important and in determining relationships between organisms. Examples: acanthostega helps us understand why is choking so common in humans. They are a water and air breathing animal, in earlier ancestors there is a lung fish which have a lung sack which allowed it to breathe in low oxygen conditions.